(19)

(11)

EP 0 920 572 A1

(12)

(43) Date of publication: 09.06.1999 Bulletin 1999/23 (21) Application number: 97938485.0 (22) Date of filing: 21.08.1997

(51) International Patent Classification (IPC):  F01B 29/ 10( . ) F03C 1/ 00( . ) F01B 1/ 00( . ) F03G 7/ 06( . ) (86) International application number: PCT/US1997/014695 (87) International publication number: WO 1998/007962 (26.02.1998 Gazette 1998/08)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV RO SI (30) Priority: 21.08.1996 US 19960701222 (71) Applicant: Hageman, Brian C. Phoenix, AZ 85028 (US)	(72) Inventor: Hageman, Brian C. Phoenix, AZ 85028 (US) (74) Representative: Kahilainen, Hannu Juhani  Tampereen Patenttitoimisto Oy, Hermiankatu 6 33720 Tampere 33720 Tampere (FI)